Single package vertical air conditioners

means air‐cooled commercial package air conditioning and heating equipment that:

(1)  is factory‐assembled as a single package that:

A.      has major components that are arranged vertically;

B.       is an encased combination of cooling and optional heating components; and

C.       is intended for exterior mounting on, adjacent interior to, or through an outside wall;

(2)  is powered by a single‐ or three‐phase current;

(3)  may contain one or more separate indoor grilles, outdoor louvers, various ventilation options, indoor free air discharges, ductwork, well plenum, or sleeves; and

(4)  has heating components that may include electrical resistance, steam, hot water, or gas, but may not include reverse cycle refrigeration as a heating means.